Asteroid 2016 RB1 was discovered on Sept. 5, 2016, by astronomers using the 60-inch Cassegrain reflector telescope of the Catalina Sky Survey, located at the summit of Mount Lemmon in the Catalina Mountains north of Tucson, Arizona — a project of NASA’S NEO Observations Program in collaboration with the University of Arizona.

If it was made of iron (8 times denser than water) and 16 meters in diameter then

The projectile begins to breakup at an altitude of 14000 meters = 46000 ft
The projectile bursts into a cloud of fragments at an altitude of 5120 meters = 16800 ft
The residual velocity of the projectile fragments after the burst is 6.76 km/s = 4.2 miles/s
The energy of the airburst is 2.09 x 10^15 Joules =500 kilotons.
Large fragments strike the surface and may create a crater strewn field. A more careful treatment of atmospheric entry is required to accurately estimate the size-frequency distribution of meteoroid fragments and predict the number and size of craters formed.

This animated gif of asteroid 2016 RB1’s close approach to Earth was imaged by astronomer Gianluca Masi on the evening of Sept. 6, 2016, using the Virtual Telescope located in Ceccano, Central Italy.
Credits: VT/Masi